【摘要】 在起重机作业过程中,起重电机时常运行在第二或第四象限,处于制动发电状态。为了回收并利用这部分再生电能,提出一种多起重机协调调度节能的新方法。针对系统复杂难以建模的问题,首先将离散系统的活动周期图建模方法推广至混杂系统,建立多起重机共直流母线节能系统活动周期图模型。进而在此模型基础上,提出了一种基于均匀分布理论的多起重机协调调度算法。仿真结果表明,该方法能有效地协调调度起重机工作状态,使处在耗能状态起重机最大限度吸收制动状态起重机再生的电能,提高系统性能。更多还原

【Abstract】 In the process of crane operations,motors sometimes work in the second or fourth quadrant,namely in the state of braking generation.In order to recycle the regenerative energy from these motors,a new energy-saving method by scheduling multi-crane working states is presented.To build a mathematic model for the multi-crane common DC bus system,Activity Cycle Diagrams is generalized to construct multi-crane common DC bus energy-saving system model firstly.Then,a multi-crane scheduling algorithm based on average distribution theory is presented by considering this model.At last,some simulation results show that this scheduling algorithm can not only coordinate the working states of cranes but also utilize the regenerate energy generated by motors in feedback states as much as possible,and the performance of system is improved.更多还原